How Much Does Concrete Lifting Cost in Calgary?

For most homeowners and commercial property managers in Calgary, the decision to repair sunken concrete comes down to two questions: How much will it cost? and Is it worth repairing versus replacing?

In the Calgary area, polyurethane concrete lifting (polyjacking) typically costs 50% to 70% less than complete concrete replacement.

While a small front walkway repair may cost a few hundred dollars, a large, deeply settled multi-car driveway will cost more. Because polyurethane foam injection is priced based on the volume of structural material required to fill underground voids and raise the slab, there is no single one-size-fits-all price.

This guide outlines how concrete lifting quotes are calculated, typical price ranges across different surfaces, and what to watch out for when reviewing contractor estimates.

Why There Is No Single Flat Price: 9 Key Cost Factors

Unlike buying a manufactured product off a shelf, concrete slab lifting is a custom site-engineering service. Technicians evaluate nine primary variables when calculating an accurate project estimate:

1. Surface Area (Slab Size)

The overall length and width of the concrete panel dictate the grid pattern of injection points needed to distribute lifting force evenly without stressing the slab.

2. Settlement Depth (The “Drop”)

A slab that has dropped 1 inch requires substantially less structural foam than a slab that has settled 4 to 6 inches at a garage threshold or porch step. As settlement depth increases, material volume rises proportionally.

3. Sub-Slab Void Volume (Hidden Caverns)

This is often the single largest factor in overall job cost. Soil erosion caused by downspout washouts or poor backfill compaction often leaves large empty pockets (voids) beneath a slab that appears to have dropped only an inch on the surface. All subterranean air pockets must be completely filled with high-density foam before the slab will begin to lift. Read more on our void filling and soil stabilization page.

4. Slab Thickness & Internal Reinforcement

Standard residential sidewalks and patios are typically 4 inches thick. Commercial loading docks, heavy vehicle aprons, and garage pads are often 6 inches thick or reinforced with heavy rebar, requiring higher lifting pressures and denser chemical formulations.

5. Foam Specification & Material Density

Polyurethane foam concrete lifting utilizes specialized multi-density closed-cell polymers:

• 2.0 to 3.0 lb/cu.ft. Foam: Standard density used for light residential sidewalks and patios.
• 3.5 to 4.0+ lb/cu.ft. Foam: High-density structural polymer required for heavy-duty driveways, garage floors, and commercial machinery pads. Higher-density materials carry higher raw material costs.

6. Number of Injection Points

Each micro-injection port requires drilling, port installation, precise material metering, and custom color-matched hole patching. Complex multi-panel configurations increase site labor time.

7. Surface Type & Decorative Finish

Smooth broomed concrete is straightforward to patch. Stamped concrete, exposed aggregate, or custom tinted surfaces require specialized color-matched masonry compounds to ensure injection holes blend seamlessly into the surrounding finish.

8. Site Access & Hose Distance

If a sunken patio or pool deck is located far in a backyard with limited gate clearance, technicians must run extended high-pressure hose lines from the mobile rig parked on the street.

9. Project Minimums (Mobilization Fee)

Contractors maintain project minimum fees (typically ranging from $500 to $750) to cover fuel, specialized mobile rig equipment setup, crew travel, and site setup—even for very small, single-panel sidewalk repairs.

Typical Price Ranges by Application

To help you budget, the table below outlines typical project price ranges across common residential and commercial concrete lifting jobs in Calgary:

Disclaimer: The ranges above represent typical project profiles. Exact quotes require an optical laser elevation inspection and void calculation.

Cost Analysis: Concrete Lifting vs. Full Replacement

When comparing quotes, property owners must consider the total finished cost rather than just the price of pouring fresh concrete per square foot.

Breakdown of Hidden Replacement Costs

• Demolition & Hauling: $2.00 – $4.00 per sq. ft. to break apart old concrete and haul debris to Calgary landfills.
• Base Excavation & Gravel: $3.00 – $5.00 per sq. ft. to re-excavate base soil and compact new crushed aggregate.
• Fresh Concrete Pour & Finish: $7.00 – $12.00+ per sq. ft. depending on finish and rebar grid.
• Landscaping Repairs: $300 – $1,000+ to repair lawns, flowerbeds, and sod crushed by heavy excavators or skid steers.

Because polyurethane foam lifting works on your existing slab, it completely eliminates demolition, hauling, dumping, base re-excavation, landscaping repair, and permit fees.

Read our complete breakdown in our guide to concrete lifting vs. replacement.

What Should Be Included in a Detailed Quote?

A professional, transparent concrete lifting proposal should explicitly detail all project scope items. Ensure your estimate includes:

• Site Assessment & Laser Measurements: Optical laser elevation mapping of target lift height and pitch.
• Material Specifications: Clear indication of high-density, closed-cell structural polyurethane foam (not low-density insulation foam).
• Void Filling Allowance: Inclusion of subterranean void filling beneath the slab, not just surface edge lifting.
• Hole Patching: Complete sealing of all 5/8-inch drill ports using non-shrink, color-matched cementitious grout.
• Site Cleanup: Full HEPA-vacuuming of drill dust and site sweep.
• Warranty Coverage: Written warranty protecting against material defects and premature settlement.

Warning Signs of a Low-Ball or “Cheap” Quote

Contractors offering quotes significantly below local market averages often cut critical technical corners to reduce costs:

Red Flag 1: Billed “Per Pound” Without a Cost Cap

Some contractors provide a low initial quote but bill foam strictly by the pound used on-site without specifying an estimated volume cap. If a massive hidden void exists beneath your driveway, a “cheap” quote can double or triple in price mid-job. Look for contractors who provide a binding fixed price or a clear maximum cap.

Red Flag 2: Using Traditional Mudjacking Slurry Billed as Poly Foam

Traditional mudjacking uses heavy sand and dirt slurry (weighing 100+ lbs/cu.ft.). While mudjacking raw materials are cheaper, adding heavy slurry to weak clay soils often causes secondary settlement. Learn the differences in our guide on mudjacking vs. polyurethane foam.

Red Flag 3: Using Low-Density Insulation Foam

Spray foam insulation expands quickly but lacks the high compressive strength (60–100+ PSI) needed to support heavy vehicles or withstand Calgary freeze-thaw cycles. Ensure your contractor uses commercial-grade geotechnical structural polyurethane.

Red Flag 4: No Void Filling Guarantee

Lifting only the edges of a slab without completely filling the center void leaves hollow air pockets underground. Unsupported concrete will snap and break under vehicle weight within months.

How an Estimate Is Calculated Step-by-Step

• Property & Slab Measurement: Measuring surface area and checking for structural cracking.

The estimator measures the exact square footage of the settled panels and checks whether the concrete is intact or broken into pieces (see can cracked concrete be lifted?).

• Laser Elevation Survey: Determining exact drop height using optical laser levels.

Laser levels establish the millimeter drop relative to surrounding garage floors, front door thresholds, or foundation lines.

• Void Volume Estimation: Calculating subterranean air space and washout erosion.

Technicians check downspout positions and soil perimeter edges to estimate subterranean void space beneath the concrete (learn more about root causes in why concrete sinks in Calgary).

• Material & Density Specification: Selecting 2lb vs 4lb structural polymer based on expected load.

The estimator selects the appropriate foam density based on whether the slab supports foot traffic (sidewalks, patios) or heavy vehicle loads (driveways, garage floors).

• Final Proposal Delivery: Delivering a transparent quote with guaranteed pricing.

You receive a detailed written estimate outlining work scope, foam specifications, cleanup, warranty terms, and a fixed cost guarantee.

Ready for an Accurate Concrete Lifting Estimate?

Don’t let sunken concrete reduce your home’s curb appeal or create dangerous trip hazards. High-density polyurethane foam lifting restores your concrete quickly, neatly, and at a fraction of replacement cost.

• How It Works: See our step-by-step installation guide on how concrete lifting works.
• Slab Breakdown Causes: Discover why concrete sinks in Calgary.
• Method Comparisons: Review all structural repair options in our concrete lifting methods guide.
• Service Hub: Explore all residential and commercial services on our Concrete Lifting Services Hub.